1996 Bronco/F-Series

Section 13-00: Instrument Cluster and Panel Lighting

1996 F-150, F-250, F-350, F-Super Duty and Bronco Workshop Manual

DIAGNOSIS AND TESTING

Pull headlamp switch to PARK position.
Rotate the headlamp switch knob and shaft fully counterclockwise without turning on interior lamps.
Disconnect illumination connector to affected control.
Test for battery voltage at Circuit 19 (LB/R).

Is battery voltage present?

Yes	No
GO to A2.	SERVICE open or ground short in Circuit 19 (LB/R). RETEST system.

Check continuity to ground at Circuit 57 (BK) at affected control illumination connector.

Is continuity present?

Yes	No
REPLACE bulb. RESTORE vehicle. RETEST system.	SERVICE open in Circuit 57 (BK). RESTORE vehicle. RETEST system.

Rotate headlamp switch knob and shaft from fully counterclockwise to fully clockwise.

Is headlamp switch mounted securely?

Yes	No
REPLACE headlamp switch. RETEST system.	MOUNT headlamp switch securely. RETEST system.

Pull headlamp switch into PARK position.
Rotate headlamp switch knob and shaft fully clockwise without turning on courtesy lamps.
Measure voltage with Rotunda 73 Digital Multimeter 105-R0051 or equivalent Circuit 19 (LB/R) at IP fuse panel.

Is battery voltage present?

Yes	No
TURN headlamp switch to OFF position. GO to C3.	GO to C2.

Is battery voltage present?

Yes	No
REPLACE fuse. RESTORE vehicle. RETEST system.	SERVICE open or ground short in IP fuse panel battery feed. RESTORE vehicle. RETEST system.

Disconnect instrument cluster connector C1.
Check resistance of Circuit 19 (LB/R) with Rotunda 73 Digital Multimeter 105-R0051 or equivalent between instrument cluster connector C1 and instrument panel fuse.

Is continuity present?

Yes	No
GO to C4.	SERVICE open in Circuit 19 (LB/R). RESTORE vehicle. RETEST system.

Is continuity OK?

Yes	No
REPLACE instrument cluster printed circuit. RESTORE vehicle. RETEST system.	REPAIR open in Circuit 57 (BK). RESTORE vehicle. RETEST system.

Pull headlamp switch to PARK position.
Rotate the headlamp switch knob and shaft fully counterclockwise without turning on interior lamps.
Disconnect illumination connector to affected control.
Test for battery voltage at Circuit 19 (LB/R).

Is battery voltage present?

Yes	No
GO to D2.	SERVICE open or ground short in Circuit 19 (LB/R). RETEST system.

Check continuity to ground at Circuit 57 (BK) for F-Series (or Circuit 694 [BK/LG] for Bronco) at affected control illumination connector.

Is continuity present?

Yes	No
REPLACE bulb. RESTORE vehicle. RETEST system.	SERVICE open in ground circuit. RESTORE vehicle. RETEST system.